378493 ÷ 51 
Let's see how many times 51 fits into 378493.

Moving on to step 1:
When dividing 3 by 51, we get 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Grab the next digit (7) from the dividend, add it to 3, then carry on: 37 / 51

Moving on to step 2:
51 can be fit into 37 0 times, resulting in a remainder of 37.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 37, we end up with 37.
Fetch the next digit (8) from the dividend, attach it to 37 and continue: 378 / 51

Advancing to step 3:
The number 51 fits into 378 7 times, leaving a remainder of 21.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
If we subtract 357 from 378, we get 21.
Append the next digit (4) from the dividend to 21 and continue with: 214 / 51

Advancing to step 4:
214 divided by 51 is 4 with a remainder of 10.
Record the quotient 4 as the next digit in the result. 
Result so far: 74.0
Subtracting 204 from 214 leaves us with 10.
Grab the next digit (9) from the dividend, add it to 10, then carry on: 109 / 51

Step 5:
109 divided by 51 is 2 with a remainder of 7.
The next digit of our result is 2. 
Result so far: 742.0
Subtract 102 from 109 to get 7.
Append the next digit (3) from the dividend to 7 and continue with: 73 / 51

Step 6:
The number 51 fits into 73 1 times, leaving a remainder of 22.
Put 1 as the next digit of the answer. 
Result so far: 7421.0
If we take 51 away from 73, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 7:
51 goes into 220 4 times with a remainder of 16.
The next digit of our result is 4. 
Result so far: 7421.4
Subtract 204 from 220 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 8:
When dividing 160 by 51, we get 3 with a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 7421.43
The remainder is 7 after subtracting 153 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 9:
If we divide 70 by 51, we get 1 and a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 7421.431
If we subtract 51 from 70, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 10:
When dividing 190 by 51, we get 3 with a remainder of 37.
Put 3 as the next digit of the answer. 
Result so far: 7421.4313
If we subtract 153 from 190, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Moving on to step 11:
The number 51 fits into 370 7 times, leaving a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 7421.43137
If we subtract 357 from 370, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 12:
When dividing 130 by 51, we get 2 with a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 7421.431372
Subtracting 102 from 130 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 13:
280 divided by 51 is 5 with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 7421.4313725
Subtract 255 from 280 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 14:
If we divide 250 by 51, we get 4 and a remainder of 46.
Record the quotient 4 as the next digit in the result. 
Result so far: 7421.43137254
Subtract 204 from 250 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

The final outcome is 7421.43137254, with a leftover of 4.6e-08.